confined space

• 有限空间

confined space的用法和样例：

例句

1. Therefore the high-speed belt conveyors have been added at the limited space behind the dam, which have greatly increased the concreting rate.
   在坝后的有限空间内，增设了高速皮带机等入仓手段，大大提高了混凝土的浇筑强度。